<html><body><div style="color:#000; background-color:#fff; font-family:times new roman, new york, times, serif;font-size:12pt">Sean,<br><br>Since, as you said, the problem is usually due to equipment on the far-end, replacing this equipment is usually expensive and a non-practical solution. On the other hand, you can easily upgrade your VoIP infrastructure by installing a commercial solutions for network echo cancellation like the PBXMate.<br><div><br><span></span></div><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: times new roman,new york,times,serif; background-color: transparent; font-style: normal;"><span><br></span></div><div><br></div> <div style="font-family: times new roman, new york, times, serif; font-size: 12pt;"> <div style="font-family: times new roman, new york, times, serif; font-size: 12pt;"> <div dir="ltr"> <font face="Arial" size="2"> <hr size="1"> <b><span style="font-weight:bold;">From:</span></b> Sean Devoy
<sdevoy@bizfocused.com><br> <b><span style="font-weight: bold;">To:</span></b> 'FreeSWITCH Users Help' <freeswitch-users@lists.freeswitch.org> <br> <b><span style="font-weight: bold;">Sent:</span></b> Sunday, March 17, 2013 6:56 PM<br> <b><span style="font-weight: bold;">Subject:</span></b> Re: [Freeswitch-users] Removing echo.<br> </font> </div> <br>
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--></style><div><div class="yiv1122852537WordSection1"><div class="yiv1122852537MsoPlainText">I feel your pain. The number one complaint from my customers switching to VOIP is the frequent presence of echo. Many times the echo is quite quiet and is easily ignored. Other times it is neither soft nor a short delay increasing the annoyance level. (The number 2 complaint is delay in connecting to the number being called).</div><div class="yiv1122852537MsoPlainText"> </div><div class="yiv1122852537MsoPlainText">I have read LOTS of articles and blogs and wikis on the subject. The prevailing wisdom seems to be:</div><div class="yiv1122852537MsoPlainText" style="margin-left:.5in;"><span style="">1.<span style="font:7.0pt "Times New Roman";"> </span></span>The echo is always caused by the phone or equipment on the far end of your call! Presumably the phone or device on the far end of the call does
not have good echo cancellation. My question is “If so, why is it ALMOST exclusively a VOIP problem?” Also, for FS developers, “Why is it so much more prevalent than when I was on Vonage for years?”<br><br></div><div class="yiv1122852537MsoPlainText" style="margin-left:.5in;"><span style="">2.<span style="font:7.0pt "Times New Roman";"> </span></span>VOIP is clearer than analog. The times when nobody is speaking on VOIP can even cause “Are you still there?” questions. That exacerbates the echo problem. When the quite levels are SO quiet, a little echo goes a long way. <br><br></div><div class="yiv1122852537MsoPlainText" style="margin-left:.5in;"><span style="">3.<span style="font:7.0pt "Times New Roman";"> </span></span>A significant number people have just adopted the idea that “Echo is part of life, get used to it. Also, tell the person you are talking to
they need a phone upgrade.” I will attest to having had my business partner switch from speaker to handset to headphone and noticed a perceivable difference in echo levels.</div><div class="yiv1122852537MsoPlainText"> </div><div class="yiv1122852537MsoPlainText">So, Anthony et. al. is this something that COULD be addressed if we put a ransom on it or is it just beyond the scope of what can be done in FS? Analog providers and Vonage have addressed the issue to the point that people are content. My customers are far from content. I THINK we could raise some real money if this is fixable – I would start the pot with a couple of hundred bucks. On the other hand, I am ignorant of the underlying issues and those other folks may have very expensive hardware addressing the issue. Please educate me.</div><div class="yiv1122852537MsoPlainText"> </div><div class="yiv1122852537MsoPlainText">As a follow up question, does my
VOIP topology affect this issue? I use a fairly large, fast, dedicated server collocated at my primary VOIP provider for fastest connect speeds. ALL of my users (and I) are remote connects. I get varying levels of echo calling from my Cisco SPA504G in Baltimore to my partner on his Cisco504G in Milwaukee on the same FS box. Granted it is usually quite low levels in that scenario, but it is sporadically quite annoying. The worst part is having NO ANSWER for (new) customers.</div><div class="yiv1122852537MsoPlainText"> </div><div class="yiv1122852537MsoPlainText">Sean</div><div class="yiv1122852537MsoPlainText"> </div><div class="yiv1122852537MsoPlainText">-----Original Message-----<br>From: freeswitch-users-bounces@lists.freeswitch.org [mailto:freeswitch-users-bounces@lists.freeswitch.org] On Behalf Of Mimiko<br>Sent: Sunday, March 17, 2013 8:49 AM<br>To: FreeSWITCH Users Help<br>Subject: Re: [Freeswitch-users]
Removing echo.</div><div class="yiv1122852537MsoPlainText"> </div><div class="yiv1122852537MsoPlainText">Some one. Some thought about this?</div><div class="yiv1122852537MsoPlainText"> </div><div class="yiv1122852537MsoPlainText">--</div><div class="yiv1122852537MsoPlainText">Mimiko desu.</div><div class="yiv1122852537MsoPlainText"> </div><div class="yiv1122852537MsoPlainText">_________________________________________________________________________</div><div class="yiv1122852537MsoPlainText">Professional FreeSWITCH Consulting Services:</div><div class="yiv1122852537MsoPlainText"><a rel="nofollow" ymailto="mailto:consulting@freeswitch.org" target="_blank" href="mailto:consulting@freeswitch.org"><span style="color:windowtext;text-decoration:none;">consulting@freeswitch.org</span></a></div><div class="yiv1122852537MsoPlainText"><a rel="nofollow" target="_blank" href="http://www.freeswitchsolutions.com/"><span
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